Improvement in coating and bronzing iron



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LANSING DOCKSTA DER, OF WEST MERIDEN, CONNECTICUT, ASSIGNOR TO BRADLEY AND HUBBARD, OE SAME PLACE.

Letters Patent No. 102,378,dated April 26, 1870.

IMPROVEMENT m com-me Ami BRONZING men.

The Schedule referred to in these Letters Patent and making part of the lam.

To all whom it may concern Be it known that I, Llursnre DooKsTADnn, of West Meriden, in the county of New Haven and State of Connecticut, have invented a new Process for Coating Metals; and I do hereby declare the following to be a full, clear, and exact description of the same.

This invention relate to an improvement in' coating iron, the object being to produce a gilt or golden 'surface, designed for parts. of gas-fixtures and many other articles made from iron.

Heretofore, to produce the golden surface on'iron, it has been required to gild or electro-plate the surface with gold or bronze, or use some other metal than iron for the parts to be gilt, thus adding greatly go thde expense of the articles where gilt work is com- My invention consists in coating the previouslypolished surface of iron with copper by placing it in a bath or solution of copper in the usual manner, then heating and lacquering the article while hot with a composition of gums, pigments, or coloring materials dissolved in alcohol, repeating the operation until the desired color is produced.

I first take the iron and finish'or polish the surface or parts to be gilt,-and coat with copper in the usual manner of coating other iron articles. I then heat the article, by placing it in an oven or by any suitable device, suflicieutly to dry the lacquer andwithout danger of ignition, and coat the surface with a lacquer prepared from gums, pigments, and coloring materials dissolved in alcohol. The lacquer drys quickly, and the operation is repeated until the desired color is obtained, the heat turning-the lacquered surface to a golden or gilt yellow, and producing a surface. not easily tarnished,'more durable even than gilt, and at a comparatively trifling cost. I

I would here remark that, while I prefer to heat the iron preparatory to lacquering, a very satisfactory result is attained by lacquering first and baking afterward. 1 l

I do not claim surfacing cast-iron articles by show \coating them with a thin electro deposit and varnisln ing the same; but

I do claim the process herein described for bronzing iron, the same consisting in coating the iron with a surface of copper, and then applying lacquer or var- I 

